Generator suspension for train-lighting systems.



P. KENNEDY.

GEHEEATOB SUSPENSION FOR TRAIN LIGHTING SYSTEMS.

APPLICATION FILED SEPT. 29, 1909.

Patented Feb. 22, 1910.

2 BHEBTHFSHEET 1.

ATTORNEAS,

P. KENNEDY. GENERATOR SUSPENSION r03 TRAIN LIGHTING SYSTEMS.

APPLIOA'UOH 211,151) snnas, 1909.

Patented P61). 22, 1910.

2 SHEETS-SHEET 2.

r:zilkllrrzilzii.

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- To all! whom it may concern:

PATENT QFFIGE.

PATRICK KENNEDY, OF NEVJ YORK. N. Y;

' GENERATdR SUSPEN'QION FOR TRAIN-LIGHTING SYSTEMS.

Specification of Letters Patent.

lutcntcd Fol). 22, 191.0.

Application filed September 29, 1909. Serial No. 520,155.

Be it known that I, Pan-men Knxxenr, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain new and useful Improve 'ments in Generator Suspension for Train--L1ght1ng Systems; and 1 do hereby declare the following to be a full.clear, and exact description of the invention. such as will enableothers skilled in-the art to which it appertains to make and use thesame.

The invention relates to the suspension of dynamos for car lightingsystems, beneath the body of the car and outside of the truck frame. andit constitutes an improvementv upon that well known mode of suspensionin which the dynamo is pivoted in a cradle and is provided with a rodactuated by. a yielding spring for the purpose of holding the drivingbelt. or chain taut.

In accordance with the invention, instead of fastening the dynamo in thecradle by a pivot, they are united by an intermeshing rack and pinion,so that the eli'cct of the spring is to roll the dynamo away from thedriving axle, to tighten the belt.

The invention furthermore provides a convenient mechanism for making apermanent adjustment of the position of the d vna mo. as distinguishedfrom the temporary and yielding adjustment made from instant to instantby the spring.

The particular nature of the improvement will he more completelyunderstood from the following description and the accompanying drawings,in which Figure l is a plan view of the end of a truck with the dynamoand its supporting cradle. .Fig. 2 is a side elevationof the dynamo andcradle, the rear portion of the truck bein shown in seetion.- Fig. 3 isan end elevation of the same parts. Fig. a is a section on the line H ofFig. 1, Fig. 5 is.a plan on the line 5-5 of Fig. 2, and Fig 6 is adetail elevation on a larger scale of the mechanism for adjusting theposition of the dynamo by hand.

The invention is shown as applied to a steel truck of a standardconstruction, of which there is illustrated the axle a and its and theend sill c. The cradle for the dynamo is, supported from the end sill cand a rearwardly extending bracket device (I. the cradle being made up.of two substantially U-shapcd frame members 0 braced by crossacross.the top to hold the dynamo to its seat. and the rack and pinion inengagement.

The intcrmeshing rack and pinion mechanism which characteristic of theinvention, is conveniently formed, in the particular embodimentillustrated herein, of Y0 sliding rack plates 1:. on the horizontal portions of the frame members 0 and slotted to receive the bolts 2', whichwith the turned down flanges serve to guide the rack plates on thehorizontal members of the frame pieces and to hold them thereto; and apair of arc-shaped pinion or gear sections attached to the casing ofdynamo D and meshing with the rack sectioush' on the rack plates 7:.Extending from the lower portion of the ca ing of the dynamo is an arm Zupon the end of which rests the'loiver end of the adjusting spring in.surrounding the guide rod n pivoted in the bracket 72 extending from theyoke a as shown. It will be observed that with this arrangement thetension ol the belt at: extending between pulley n.- on the dynamo shaftand driving pulley 3/ on axle (z is in such a direction as to roll thedynamo pieces a, and having retaining straps f along the racks 71 to theleft in Fig. :2. and

this tendency is yieldingly opposed by the 5 belt-tightening spring172., which tends to roll the dynamo in the opposite direction. therebymaintaining a tight, transmission belt.

.The tension on the spring I]: is controlled by means of the travelingcompression nut 0 on the sores-threaded guide rod H. but l have foundthat in practice there is danger that too great tension will be put ontin? driving belt or unskilled or careless operators, and to preventthis 1 provide a stop for the compression nut, which may. for example,take the form of a limiting lccve between the end of arm Z and the nut 0so that the spring in cannot he compres ed into a space less than thelength of the sleeve p.

The above described structure provides for the yielding adjustment ofthe belt from instant to instant. butit is desirable in prac tirethatther'e should he means for permanently adjusting the distance ofthedynamo from the driving axle within quite wide wheels, the end portionof the side sills Z,

limits, and it" is for this purpo e that the rack plates 71 are arrangedto slide on the frame members e. In order that this adjustment may beeffected in a definite and .convement manner, I provide mechanism forsliding the rack plates I: along the memt... n..- l.-

as to clear the vertical portions of members e.

are ruck sections r engaged by pinions r on a shaft 8 journalc in theframe pieces 6 as shown. and capable of licing'rotnted by :1 wormgearing comprising a worm wheel 2 and worm f. the Worm being on :2shaft, carrying a hand vrllcel u on the outside of the cradle and in :iconvenient position to he turned to slide the rack plates 11 and therebyztdjuret the pt'lsition of the dynamo with "epcct to the driving axle.

Having thux dt-e t-rihed in invention. what I claim is:

l. A car-truck having bracket device extending (llltr ltlt of an endsill thereof, in combination with a cradle between said bracket and thoend sill. a dynamo within the cradle. an iut rnxerhing rucl-z and pinionengagement litlwtvh he dynamo and cradle. :1 pulley on the shaft of thedynamo. a driving policy on the axle oi' thc truck. 11 driving-haltextending;- llfil'il't'lfl s iid pulleye, and moan; for elasticallydrawing the dynamo away from the truck at i to maintain the tenion ofthe belt: so llllfill) dc.- Fczibed.

.2. A cur-truck having bracket device extending outside of :in end sillthereof, in cmuhirmtion with :1 cradle lnrtvieen said llruclwt and theand ill. the cradle. an lllltlll).; llll! rites; and pinion engagementbetween the :ivnzuno and cradle. a pulley on the Slltl oi" the d name. adriving puller ot; the axle of the truck, drii iughelt extending betweensaid pnlicyez, Hit-HHS for ei-lnsticullr drawing the dynamo ;l.'\';.from the trucl; axle in maintain the tension of the bolt. and!l'lL*(il;'.tii ?zt for giring a permanent iltljlhlllltll'. to thepositi n of the dynamo. CUllllH'lt llg gm litil'tll to the rack andpinion dj minio \vithim;

lli f il.;ilil lll lo I belt extending between on the shaftof thedynamo. a driving pulley on the axle of the truck, and a drivingpulleys, in comlrintnion ill! a rack snoahly supported in the cradle andan intcrzneshin; pinion section secured to the dynamo casing. gearingfor sliding the rack, an actuating handle for said gearing extemlingloutside of the cradle. and :1 spring connected to the dynamo to draw it:rway from the truck axle: substantially as described. car truck havinga bracket device extending outside of an end sill lhcl'tOf. a cradlebetween said bracket and the 0nd sill. :1 dynamo irithin the cradle. apulley on the shaft of the dynamo, n drivin; pulley on the axle of thet! 'lt. and driving helt extending between id ginilltzys, incourhinntion with a rack slidahly suppor ed in the cradle. :minternnshing pinion section secure-(i to the dynamo casing. u lercr armI extent'ling from the lower portion of the dynamo casing. :2 guide rodn hung from the bracket and extending through the end of L'hc lever arm,:1 spring: surrouiuliug FSl l guide I'ULL'Q coinpre ion nut u torcorupressing said spring. and :1 stop for the compression not to limitthe Ct'llllpttislml of the Fiil'lllgl sulhttuxtinll us dw 'rilnd.

t3. can truck having n lnzulcet device extending outside of the tlltlili thereof. :1 cradle. between th brack t and the end ill. n dynamowithin the cradle. u pulley on the supported on th -wrrndlc and intcrmct'zzing' pinion sections :t't Eml to the dynamo rm.- i'ng. n lever armcxtcuding from the lower porti n of the dynamo miug. ant. :1 contonspring lit-ting on the free end of e l lever to roll the dynamo xiv-sayfrom the e "$11.0 trurlc: suletmzindlr as dcscrii-ed.

ctivt-t relative rnm'cmcnl' thereof and on :tc- 1 I. .a car-truck having:1 l rztcket-dc icc im ng handle for the gearing ext nding t lin o tsideof no end ill thereof in oi widtoi the cradle: 'enhstnnlinlii' as do folnnzition with R cradle between said iiii t '.t l zl and the end si l.a dynamo .itthin 3. A car-truck having :1 bracket deiice extendingoutside of an end rill thereof. in combination \ylli] a dynamo movnhlysnipported between the bracket and end sill. a pulley on the shaft 01"the dynamo, :1 driving pulley on :he axle of the truck, a driving l 'cltextending between Hid pulleys. :1 C011]- prtsed helstightnixn; ring fordrawing dynamo away front the axle of the a guide rod for the epring, acompresit on the r w: 5 stop comion nut to line: on'l pro. .t of theuhstantinlly 23'; dmzcribed.

4. A car truck havingo hrarket device ext nding outside of an end sillthereof. a c die between said bracket and the si 1, a dynamo within thecradle, a pulley described.

.ln t estiinonylivhereof I atlix my signature. in-presence of on)witnesses.

PATRICK K ENIJ'EDY. Witnessa:

Ana. f TREADXELL, J ta. WALTER E. GREEK.

